Read-Write LoggerBoolMap

[Peter Kovacs]

LoggerBoolMap map is only readable, so e.g. it can be used for ProcessedMap but it cannot be used for ReachedMap in Bfs, Dfs, Dijkstra.

Now the simplest way for creating such a map is

typedef LoggerBoolMap<...> LoggerMap;
BoolEdgeMap map;
LoggerMap log;
ForkMap<BoolEdgeMap, LoggerMap> m(map, log);